The chemical name for the protein titin, which spans over 189 thousand letters, is often argued to be the longest word in the world. Its absurd length is due to the fact that proteins are named by combining the names of all of the individual amino acids used to form them. In the case of titin, its scientific name takes over three and a half hours to say out loud. Still, many people refuse to accept it as the world’s longest word because it is a scientific name. In most English dictionaries, the word pneumonoultramicroscopicsilicovolcanoconiosis is the longest one you are going to find at a whopping 45 letters long. This word refers to a lung disease caused by silica dust. For the rest of our words, we’ll venture outside the English language to look at some of the longest words you’ll find around the world. Many English words come from Sanskrit. Read about 17 of them here. This Spanish medical term refers to muscles in the neck and is most likely going to be the longest word you’ll find in a Spanish dictionary. Get the fascinating stories of your favorite words in your inbox. By clicking "Sign Up", you are accepting Dictionary.com Terms & Conditions and Privacy policies.NameThis field is for validation purposes and should be left unchanged. This name comes from the Maori language and refers to a hill located in Hawke’s Bay, New Zealand. At 85 characters long, this name is often considered to be one of the longest place names in the world. Read about words that originate from different Indigenous languages. This ridiculous ancient Greek word was invented by the playwright Aristophanes, sometimes known as the “Father of Comedy.” This unnecessarily long word refers to a fictional dish that is made of a variety of animal parts. When transliterated into the Latin alphabet, this tasty meal appears as Lopado­temacho­selacho­galeo­kranio­leipsano­drim­hypo­trimmato­silphio­karabo­melito­katakechy­meno­kichl­epi­kossypho­phatto­perister­alektryon­opte­kephallio­kigklo­peleio­lagoio­siraio­baphe­tragano­pterygon. At 183 characters long, this word is also one of the longest words ever used in literature. By clicking "Sign Up", you are accepting Dictionary.com Terms & Conditions and Privacy policies.EmailThis field is for validation purposes and should be left unchanged. This iframe contains the logic required to handle Ajax powered Gravity Forms.